Opencast Paella Player 7 vulnerable to Cross-Site-Scripting

Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to Opencast 17.8 and 18.2, the paella would include and render some user inputs (metadata like title, description, etc.) unfiltered and unmodified. The vulnerability allows attackers to inject and malicious HTML and JavaScript in the player, which would then be executed in the browsers of users watching the prepared media. This can then be used to modify the site or to execute actions in the name of logged-in users. To inject malicious metadata, an attacker needs write access to the system. For example, the ability to upload media and modify metadata. This cannot be exploited by unauthenticated users. This issue is fixed in Opencast 17.8 and 18.2.

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在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Opencast 跨站脚本漏洞

Opencast是Opencast组织的一款用于大规模自动视频捕获，管理和分发的直播视频支撑软件。 Opencast 17.8之前版本和18.2之前版本存在跨站脚本漏洞，该漏洞源于未过滤用户输入，可能导致跨站脚本攻击。

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